工程车辆散热系统数值分析与改进  

Numerical Analysis and Improvement on Heat Radiation System of Engineering Vehicles

作　　者：薛建奇 刘佳鑫 王宝中[1] 徐少彬 王鑫阁 龙海洋 XUE Jian-qi;LIU Jia-xin;WANG Bao-zhong;XU Shao-bin;WANG Xin-ge;LONG Hai-yang(College of Mechanical Engineering,North China University of Science and Technology,Tangshan 063210,China;School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华北理工大学机械工程学院,河北唐山063210 [2]华中科技大学能源与动力学院,湖北武汉430074

出　　处：《机械工程与自动化》2018年第2期7-8,11,共3页Mechanical Engineering & Automation

基　　金：国家科技支撑计划项目(2013BAF07B04);湖北省技术创新专项基金资助项目(2016AAA045);博士科研启动项目(28406999)

摘　　要：为了对工程车辆散热系统研究并改进散热器的散热性能,以工程车辆散热系统为研究对象,通过对工程车辆建立三维模型,应用CFD数值仿真的方法对工程车辆散热系统进行仿真分析,针对散热性能不足、进气量小等问题进行了改进,增加动力舱进气口,同时加大了风扇转速。结果表明:改进前后各散热器的热流体出口温度有所降低,其中冷却液降低幅度最大达到6.67%,液压油温度降低幅度为2.99%。通过数值仿真结果可以看出:改进后散热器的散热性能有所提升,该研究为今后工程车辆散热系统的优化提供了一定的参考。In order to study heat radiation system of engineering vehicles and improve radiating performance of the radiators,regarding engineering vehicles as research objects,this paper established a three-dimensional(3D)model for the vehicles and simulated the heat radiation system of the vehicles based on CFD numerical simulation method.In addition,the system was improved focusing on the problems including weak radiation performance and insufficient air inflow,such as adding air inlets in power cabins and increaing fan rotate speed.The result shows that due to the improvement,the temperature of thermal fluid outlet of each heat radiator has been reduced,in which the coolant liquid temperature has been reduced by maximum 6.67%and the hydraulic oil temperature has been reduced by 2.99%.According to the numerical simulation result,the improved radiator can operate with better radiating performance,which provides reference to the optimization of engineering vehicle heat radiation system in the future.

关 键 词：工程车辆 散热器 数值分析 动力舱 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]